Pressure regulator



May 12, 1925.

Y J. RUMPF PRESSURE REGULATOR.

Filed Feb. 24, 1923 INVENTOR ATTORNEY Patented May 12, 1925. V

UNITED STATES PATENT OFFICE.

JOHN nuivirn, on NE MiLronn Bonouen. new JERSEY; ASSIGNOR r THE SAFETYcAn nnn'rinea LIGHTING COMPANY, A CORPORATION on NEW JERSEY.

PRESSURE REGULATOZlt.

Application filed February 24,1923. Serial No. 620,923.

To all whom it may concern:

Be it known that 1, JOHN RUMPF, a c1t1- zen of the United States, and aresident of borough of New Milford, county of Bergen, and State of NewJersey, have invented an Improvement in Pressure Regulators, of whichthe following is a specification.

This invention relates to construction for a vice of the above nature ofsimple and durable construction and well adapted to meet therequirements of hard practical use. [inother object is to provide such adevice capable of a high degree of efliciency in service. Another objectis to provide a device of the above nature wherein the parts areconveniently and easily assembled and are readily accessible forcleaning, replacement or repair. Other objects will be in part obviousor in part pointed out hereinafter.

The invention accordingly consists in the features of construction,combinations of elements and arrangements of parts as will beexemplified in the structure to be hereinafter set forth and the scopeof the. ap' plication of which will be indicated in the followingclaims.

In the accompanying drawing in which is shown one of the variouspossible embodiments of this invention,

Figure 1 is a plan of a pressure regulator, certain parts being omitted;and

Figure 2 is a sectional elevation, the section being taken substantiallyalong the line the metal may be homogeneous and free.

from porosity. On the inside of the casing and adjacent its. lower wallis formed. an inwardly projecting boss 11 through which extends apassageway threaded at its oilter end 12 to receive a pipe connectionfrom any desired source of fluid supply. Adjacent the central portion ofthis passage is positionedstrainerfelt or Wicking 13, and on either sideof this wicking is positioned a member of straining gauze 13 to strainand purify the gas or other. fluid admitted to the interior of thecasing. Into the other end of this passage through the bossll isthreaded a valve casing 14 provided with a restricted passage 15 openinginto a larger recess 16 at its-inner side. l/Vithin; this recess 16loosely rests a valve member 17 provided with a conicalend 18 adapted tocooperate with the inner end of the passage 15. The valve member 17 isprovided with a longitudinal recess 19 in which rests a strut 20 throughwhich the valve is operated. The end of the valve member 17 is providedwith a shoulderl'? between which and the end of the casing 14 restsacoiled spring 21 tending to draw the valve member 17 away from its seatabout the end of the passageway 15. I 1

The interior of the casing 10 forms a chamber 22, the upper side ofwhich is closed by a diaphragm 23 held in place between thetop rim ofthe casing member 10 and a flanged ring 24 by screws such as 25; Thecentral portion ofthe diaphragm 23 is clamped between a pair of washers26 and 27 by means of a clamping bolt 28'passing therethrough andclamping nuts 29. The clamping bolt 28 is provided with a downwardlyextending portion 30 of reduced diameter through an opening 31 in whichpasses the end portion 32 of the longer end of a substantially L-shap'edlever 32. The upper and lower walls of the opening 31 are preferablyrounded to permit of a rocking motion of the lever 32.

The. lever 32 extending toward the curved portion thereof is preferablygradually increased inwidth, as shown in Fig. 1, and adjacent the endportion of its shorter end is pivoted upon the ends of two cone-pointedscrews 33 which are threaded through openings in. the casing member 10and are provided with locking nuts 34. The screws 33 are preferably of alength to reach only part waythrough the casing 10 and in the outer endsof the openmgs therefor are threaded screws 33 between the heads of '20which engages the valve member 17 as above described. The spring 21urging the valve member 17 away from the seat as before described urgesthe strut 2-0 against pair of coiled compression springs 37. The

other ends of the springs 3'1 are provided with guide members 38 intothe open ends of which are inserted spring guide screws 39" These guidescrews;39 are threaded tightly intothe casing member lO from the outside'llhusthe compression springs 37 hearing against the lever32, throughthe action of the lever 32 inengagement with the openin 31 in the member30, tend to pull the diaphragm 23 downwardly opposition to the pressurethereon of fluid within the chamber 22. By adjustment of the pivotscrews 33 the lever 32 may be moved away from or toward the springs 37and the compression in the springs 37 may thus be varied at v The actionof the pressure regulator is substantially as follows: Gas or otherfiuid under pressure enters through the passageway through the boss 11and through the passage 15 past the valve l7oarid into the chamber 22.Thereupon pressure builds up within the chamber 22 bearing against thediaphragm and tending. to force the diaphragnr upwardly. A movementupwardly of the diaphragm 23; through c the lever 32 rocking upon itspivots 33 thrusts the strut to the right and forces the valve member; 17toward closing position Any movement upwardly of the diaphragmo23,however, is opposed the'pr essure of the springs 37 bearing. against thelever 32. Thus. upon a pressure being built up within the chamber 22which is greater than the combined: force ofthe springs 37 opposing themovementof the diaphragm 23, the valve 17 through themovement Off/helever 32 about its'pivot and through the connecting strut 20, will bemoved to closed position arresting the further entraneeot gas to thechamber 22. 'The euit passage from the chamber 22 is shown at(lO-tromwvhich connection may be made to any desired point. Upon thepressure within the chamber-22 dropping below the pressure exertedby thesprings 37 upon the diaphragm 23due to withdrawal of the'fluidthroughthepassage 40, the springs 37 will move the lever 32 back againand the valve 17 will be moved to open position. Thus. it will beseenthat there is automatically maintained a substantially constant gaspressure within the chamber 22. The amount of this constant pressureregulated by the compression placed. inthe springs 37 which maybe setas-desired,

as above describedrby; adjustment of the pivot screws 33. v The pivotsfor the lever 32 being pointed, as well as the ends of the valve guidesand of the strut20 engaging the lever 32, friction is substantiallyavoided thus greatly augmenting the sensitiveness and accuracy of thedevice as a whole. The valve mechanism is confined substantially withinthe casing 14 so that machine work upon the outer casing itself ispractically done away with. removable cover memher ll rests upon theupperrim of the ring 24 to protect the diaphragm 23 from dust ddi t. i

It will thus be seen that there is herein provided adevice whichembodiesthe fea; tures of this invention, device in its action attainsthevarious objects of the invention, andthat the same is well adapted tomeet the requirements of practical use. As many possible embodiments maybe made of this invention and as many changes might be made in theembodiment hereinset torth, it is to be understoodthatallmamhereinbefore set forth or shown in the accompanying drawing is to beinterpreted as illustrative and not in a limiting sense.

.1 claim as my invention 1. In a device of the class described, in

combination, a pressure chamber, a valve Controlling the entrance offluid theretofa diaphragm responsive to fluid pressurewithin saidchamber, lever connected to said diaphragm' and responsive to movementsthereof, means connecting said lever and said valve to mal rethe latterresponsive to moven'ients of the former, spring means urging saidleverinopposition tothe effect thereon 0 I of fluid pressure upon saiddiaphragm and holding saidlever against its fulcrum, and means foradjusting the position of said tulcrum to vary the force exerted by saidspring against said lever.

2. In a device of theclass described, con'il'iination, a pressurechamber, a valve controlling the entrance of fluid thereto, a diaphragmresponsive to fluid pressure within said chamber, a lever connected tosaid diaphragm and responsive to movements thereof, a connecting memberlooselyresting between said valve and said lever to make the formerresponsive to movements of the latter toward the former, spring meansurging said lever in opposition to the effect thereon oi fluid pressureagainst said dia- 'ihragm, and a second spring urging said connectingmember against said lever.

3. In a device of the class described, in combination, a pressurechamber, a passage for theentrance of fluid thereto, a valve memberloosely supported within said passage and adapted to control the flow offluid thcrethrough, a diaphragm responsive to fluid pressure within saidchamber, a lever connected to said diaphragm and responsive to movementsthereof, spring means urging said diaphragm in opposition to the effectof fluid pressure thereon, a strutinterposed be tween said valve andsaid lever to make the former responsive to the movements of the lattertoward the former, and a second spring means holding said strut inposition between said valve and said lever.

4. In a device of the class described, in combination, a pressurechamber, a passage for the entrance of fluid thereto, a valve memberloosely supported within saidpassage and adapted to control the flowotfluid therethro-ugh, a diaphragm responsive to fluid pressure withinsaid chamber, a lever connected to said diaphragm and responsive tomovements thereof, spring means urging said diaphragm in opposition tothe effectof fluid pressure thereon, a strut interposed between saidvalve and said lever to make the former responsive to movements of thelatter toward the former, andspring means hearing against said valvemember urging the latter away from its seat and holding said strut inposition between said lever and said valve member.

5. In a device of the class described, in

combination, a casing having an inlet passage and an outlet passage forfluid, a diaphragm closing one side of said casing and responsive tofluid pressure therein, a lever connected to said diaphragm to beresponsive to movements thereof and extending opposite said inletpassage, a valve controlling said inlet passage, means connecting saidvalve and said lever to make the former responsive to movements of thelatter, and a pair of spiral compression springs, one on either side ofsaid inlet passage bearing against said lever in opposition to theeffect thereon of fluid pressure upon said diaphragm and holding saidlever in position against its fulcrum. I i

6. In a device of the class described, in combination, a casing havingan inlet passage and an outlet passage for fluid, a diaphragm closingone side of'said casing and responsive to fluid pressure therein, alever connected to said diaphragm to be responsive to movements thereofand extending opposite said inlet passage, a valve controlling saidinlet passage, means connecting said valve and said lever to make theformer responsive to movements of the latter, a pivot for said lever,compression means interposed between said lever and the wall of saidcasing urging said lever in opposition to the effect thereon of fluidpressure upon said diaphragm and urging said lever against said pivot,and means for adjusting the position of said pivot to vary thecompression in said spring. I v

7. In a device of the class described, in

combination, a casing comprising a pressure chamber, and having in awall thereof an inlet passage for fluid, a diaphragm closing one side ofsaid chamber and responsive to fluid pressure therein, a lever connectedto said diaphragm to be responsive to movements thereof and extendingopposite said inlet passage, a hollow member threaded into the innerside of said passage and compris ing a valve seat, a valve memberresting loosely in said hollow member and adapted to coact with saidvalve seat to control said passage, a strut loosely interposed betweensaid valve member and said lever to make the former responsive tomovements of the latter toward the former, a spring interposed betweensaid hollow member and said valve, urging the latter toward said leverand away from said seat and holding said strut in position, spring meansbearing against said lever in opposition to the effect thereon of fluidpressure against said dia phragm, and means for adjusting the forceexerted by said last means.

i 8. In a device of the class described, in combination, a, casingcomprising a pressure chamber and having in a wall thereof an inletpassage for fluid, a diaphragm closing one side of said chamber andresponsive to the fluid pressure therein, a lever connected to saiddlaphragin to be responsive to movements thereof and extending adjacentsaid inlet passage, a loosely mounted valve member adapted to 'coactwith the inner side of said passage, means adapted to guide said valvevmember into operative relation with said passage, a member looselyinterposed between said valve member and said lever to make the formerresponsive to movements of the latter toward the former, and springmeansurging said vave member away from said passage and holding saidloosely interposed member in position.

9. In a device of the class described, in

combination, a pressure chamber, a valve controlling the entrance offluid thereto, a diaphragm exposed to fluid pressure within said chamberand responsive thereto, a lever connecting said diaphragm and saidvalve, a pivot for said lever mounted in a wall of said chamber, meansfor adjusting the position of said pivot, and adjustable meanscontrolled by the adjustment ofsaid pivot urging said leverin oppositionto the effect thereon of said fluid pressure acting upon said diaphragm.

In testimony whereof, I have signed my name to this specification this13th day of February, 1923.

JOHN RUMPF,

